CN104930099A - Bidirectional rotation damper based on cylinder magnet pair and control method thereof - Google Patents
Bidirectional rotation damper based on cylinder magnet pair and control method thereof Download PDFInfo
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- CN104930099A CN104930099A CN201510369108.2A CN201510369108A CN104930099A CN 104930099 A CN104930099 A CN 104930099A CN 201510369108 A CN201510369108 A CN 201510369108A CN 104930099 A CN104930099 A CN 104930099A
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- cylindrical magnet
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- cylindrical
- damping
- cylindrical shell
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F6/00—Magnetic springs; Fluid magnetic springs, i.e. magnetic spring combined with a fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/002—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion characterised by the control method or circuitry
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- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Electromagnetism (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a bidirectional rotation damper based on a cylinder magnet pair and a control method thereof. The damper is characterized in that a sintering neodymium iron boron cylinder magnet pair which is radially magnetized is employed in the damper; the magnet pair is composed of a first cylinder magnet and a second cylinder magnet; the first cylinder magnet is fixedly embedded in a center shaft; the second cylinder magnet is fixedly arranged at a circumferential portion, with the radius being R, in a barrel; the center shaft is located at the center axis of the barrel; the center shaft and the barrel are coaxial and can rotate relatively; and magnetic lines of the first and second cylinder magnets are distributed in the radial direction of the center shaft. According to the invention, the damper is constant in output damping force, is high in zero point positioning accuracy, is free of sealing and electric control, can be widely applied, is simple and compact in structure, is convenient to use, and is reliable in performance.
Description
Technical field
The present invention relates to a kind of damper, is more particularly a kind of bidirectional rotary dampers based on cylindrical magnet pair and controlling method thereof, and damping force can be provided to feed back.
Background technique
Damping device to produce the principle of resistance to motion based on producing frictional force or viscous force, in energy-absorbing damping, slow down in movement tendency, safe buffering etc. and be widely used.Damping device of the prior art can be divided into the elastic type dampings two kinds such as medium damping and spring, flexible wire ropes, electromagnet such as magnetic flow liquid, hydraulic viscosity are oily, damping is husky substantially.There is following deficiency in the damper of this kind of prior art: medium damper has the sealing problem of resisting medium, its damping constant is subject to ambient temperature and frictional heating affects the damping force caused and exports in non-constant, resisting medium using process and there is noise and wear problem in a particular application; Elastic type damping device in easily tired, overload distortion after using for a long time, zero-point positioning precision is low, its working life is short; In addition, magnetic flow liquid and electromagnetic type damping device often need to configure complicated circuit control structure, bring the increase of cost, there is inconvenience when the occasions such as field make.
Summary of the invention
The present invention is the deficiency for avoiding existing for above-mentioned prior art, provide a kind of damping force export constant, zero-point positioning precision is high, without the need to sealing, without the need to automatically controlled, applicable situation is wide, simple and compact for structure, easy to use, reliable performance, the cheap bidirectional rotary dampers based on cylindrical magnet pair and controlling method thereof.
The present invention is that technical solution problem adopts following technological scheme:
The structural feature that the present invention is based on the bidirectional rotary dampers of cylindrical magnet pair is: the sintered NdFeB cylindrical magnet arranging a pair radial magnetizing is secondary, and what form described magnet pair is the first cylindrical magnet and the second cylindrical magnet respectively; Described first cylindrical magnet is fixedly inlaid in axis, and it is on the circumferential position of R that the second cylindrical magnet is fixedly installed on radius in cylindrical shell, and described axis is on the location mid-shaft of cylindrical shell, axis and cylindrical shell coaxial, and can to relatively rotate; The magnetic line of force of described first cylindrical magnet and the second cylindrical magnet is along axis in the radial direction.
The structural feature that the present invention is based on the bidirectional rotary dampers of cylindrical magnet pair is also: make the radius of the first cylindrical magnet be R1, the radius of the second cylindrical magnet is R2, setting: R is greater than R1+R2, makes to be formed with interval between described first cylindrical magnet and the second cylindrical magnet.
The structural feature that the present invention is based on the bidirectional rotary dampers of cylindrical magnet pair is also: arranging described axis is take brass as material, and described cylindrical shell take duralumin as material.
The structural feature that the present invention is based on the bidirectional rotary dampers of cylindrical magnet pair is also: on described cylindrical shell, arrange axial hole for fixedly mounting the second cylindrical magnet, change the size of radius R and/or get the value of different radius Rs 2, the size of the damping force that damper exports can be adjusted.
The structural feature that the present invention is based on the bidirectional rotary dampers of cylindrical magnet pair is also: on cylindrical shell, radius is on the circumferential position of R, and be in and be fixedly installed three cylindrical magnet with the position of the second cylindrical magnet to 180 °, the heart, described three cylindrical magnet is identical with the magnetic line of force direction of the second cylindrical magnet.
The feature that the present invention is based on the controlling method of the bidirectional rotary dampers of cylindrical magnet pair is: arranging described damping device has the following two kinds control mode:
Pattern one: cylindrical shell damping exports
Fixing axis, the central angle position at definition axis place is reference position, at described reference position place, the first cylindrical magnet with the magnetic line of force place of the second cylindrical magnet on the same line, and magnetic line of force direction is contrary, export as minimum damping force in the cylindrical shell damping of described reference position place;
Keep the magnetic line of force direction of the first cylindrical magnet constant, drive barrel body rotation, described second cylindrical magnet rotates with cylindrical body synchronous, the central angle turned over along with cylindrical shell is larger, and be not more than 90 °, the damping force that cylindrical shell damping exports is larger, and when the central angle that cylindrical shell turns over is 90 °, cylindrical shell damping exports as maximum damping force;
Corresponding to cylindrical shell relative to axis rotation in the clockwise direction and in the counterclockwise direction, forward damping force is symmetrical about reference position.
Pattern two: axis damping exports
Fixed cylinder, the central angle position at definition cylindrical shell place is reference position, at described reference position place, the first cylindrical magnet with the magnetic line of force place of the second cylindrical magnet on the same line, and magnetic line of force direction is contrary, export as minimum damping force in the axis damping of described reference position place;
Keep the magnetic line of force direction of the second cylindrical magnet constant, drive central axis, described first cylindrical magnet is with axis synchronous axial system, the central angle turned over along with axis is larger, and be not more than 90 °, the damping force that axis damping exports is larger, and when the central angle that axis turns over is 90 °, axis damping exports as maximum damping force;
Corresponding to axis relative to cylindrical shell rotation in the clockwise direction and in the counterclockwise direction, forward damping force is symmetrical about reference position.
The feature that the present invention is based on the controlling method of the bidirectional rotary dampers of cylindrical magnet pair is: arranging described damper is gear unit, the first cylindrical magnet in described gear unit and the second cylindrical magnet are free state, the mode of operation arranging gear unit is: drive barrel body rotation with the axis rotated, or drives central axis with cylindrical shell.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, the present invention is simple and compact for structure, installing space is little, and it is without the need to automatically controlled, and install and be simple and easy to safeguard, fabricating cost is low;
2, cylindrical magnet pair is set for contactless, noise free, nothing wearing and tearing in the using process of damper in the present invention;
3, damping force of the present invention is stablized, and its damper temperature applicable range reaches-40 DEG C ~ 180 DEG C, and in its Environmental Conditions, permanent magnet damping force remains unchanged, and the fatigue as the damping device such as spring, wire rope can not occur; Also such as viscous oil, silicon oil damper change the damping force the caused problem such as inconstant with external temperature change oil viscosity can not be there is;
4, torque of the present invention is stablized: permanent magnetism has stable moment of torsion, static constant with moment of torsion when rotating.Therefore, from minimum speed to maximum speed, moment of torsion is constant all the time.Do not affect by time, temperature, speed or other system and change;
5, in the present invention because of by the effect of cylindrical magnet secondary field power, damper has the zero reference of high position precision, is in zero-bit state when damper does not work all the time; During damper work, depart from the damping that zero-bit has clockwise and counterclockwise both direction, two is symmetrical about zero-bit to damping, and damping force increases with the increase of deviation angle, and especially needing flexible force to feed back occasion in medical surgery simulated training has very exigence.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the schematic cross-sectional view of Fig. 1;
Fig. 3 is another mode of execution structural representation in the present invention;
Number in the figure: 1 first cylindrical magnet, 2 second cylindrical magnets, 3 cylindrical shells, 4 Cock screws, 5 end caps, 6 deep groove ball bearings, 7 axis, 8 three cylindrical magnet.
Embodiment
See Fig. 1 and Fig. 2, in the present embodiment based on the structural type of the bidirectional rotary dampers of cylindrical magnet pair be: the sintered NdFeB cylindrical magnet arranging a pair radial magnetizing is secondary, and what form magnet pair is the first cylindrical magnet 1 and the second cylindrical magnet 2 respectively; First cylindrical magnet 1 is fixedly inlaid in axis 7, axis 7 utilizes deep groove ball bearing 6 and end cap 5 to be bearing on the axial centerline of cylindrical shell 3, it is on the circumferential position of R that second cylindrical magnet 2 is fixedly installed on radius in cylindrical shell 3, specifically axial hole is set on the corresponding position of cylindrical shell 3, second cylindrical magnet 2 is inlaid in axial hole, and fastening with Cock screw 4, ensure that the magnetic line of force passes through the center of circle; Axis 7 is on the location mid-shaft of cylindrical shell 3, and axis 7 is coaxial with cylindrical shell 3, and can relatively rotate; The magnetic line of force of the first cylindrical magnet 1 and the second cylindrical magnet 2 is along axis 7 in the radial direction.
In concrete enforcement, corresponding vibrational power flow also comprises:
Make the radius of the first cylindrical magnet 1 be R1, the radius of the second cylindrical magnet 2 is R2, setting: R is greater than R1+R2, makes to be formed with interval between the first cylindrical magnet 1 and the second cylindrical magnet 2, and this structural type makes non-contact between two cylindrical magnets, without wearing and tearing; And the magnetic force between two magnet pairs is converted into the damping due to rotation power between axis and cylindrical shell, makes the output of damping force and use become possibility.
Arranging axis 7 is take brass as material, and cylindrical shell 3 take duralumin as material.
Cylindrical shell 3 arranging axial hole for fixedly mounting the second cylindrical magnet 2, changing the size of radius R and/or getting the value of different radius Rs 2, the size of the damping force that damper exports can be adjusted.
In structural type shown in Fig. 3, that radius is on the circumferential position of R on cylindrical shell 3, and be in and be fixedly installed three cylindrical magnet 8 with the position of 180 °, the second cylindrical magnet 2 pairs of hearts, three cylindrical magnet 8 is identical with the magnetic line of force direction of the second cylindrical magnet 2, and damping force so can be made to double.
That the control mode that damping device has the following two kinds different is set based on the controlling method of the bidirectional rotary dampers of cylindrical magnet pair in the present embodiment:
Pattern one: cylindrical shell damping exports
Fixing axis 7, the central angle position at definition axis 7 place is reference position P, at reference position place, the first cylindrical magnet 1 with the magnetic line of force place of the second cylindrical magnet 2 on the same line, and magnetic line of force direction is contrary, export as minimum damping force in the cylindrical shell damping of P place, reference position;
Keep the magnetic line of force direction of the first cylindrical magnet 1 constant, cylindrical shell 3 is driven to rotate, second cylindrical magnet 2 is with cylindrical shell 3 synchronous axial system, the central angle turned over along with cylindrical shell 3 is larger, and be not more than 90 °, the damping force that cylindrical shell damping exports is larger, when the central angle that cylindrical shell 3 turns over is 90 °, cylindrical shell damping exports as maximum damping force, M point position is that cylindrical shell turns over 90 ° counterclockwise as shown in Figure 2, M point position is the maximum damping force point of cylindrical shell when rotating counterclockwise, N point position is that cylindrical shell turns over 90 ° clockwise, N point position is the maximum damping force point of cylindrical shell when rotating clockwise.
Corresponding to cylindrical shell 3 relative to axis 7 rotation in the clockwise direction and in the counterclockwise direction, forward damping force is symmetrical about reference position.
Pattern two: axis damping exports
Fixed cylinder 3, the central angle position at definition cylindrical shell 3 place is reference position P, at P place, reference position, the first cylindrical magnet 1 with the magnetic line of force place of the second cylindrical magnet 2 on the same line, and magnetic line of force direction is contrary, export as minimum damping force in the axis damping of P place, reference position;
Keep the magnetic line of force direction of the second cylindrical magnet 2 constant, axis 7 is driven to rotate, first cylindrical magnet 1 is with axis 7 synchronous axial system, the central angle turned over along with axis 7 is larger, and be not more than 90 °, the damping force that axis damping exports is larger, when the central angle that axis 7 turns over is 90 °, axis damping exports as maximum damping force, as shown in Figure 2, cylindrical shell is fixed, axis rotation, M point position is that axis turns over 90 ° counterclockwise, M point position is the maximum damping force point of axis when rotating counterclockwise, N point position is that axis turns over 90 ° clockwise, N point position is the maximum damping force point of axis when rotating clockwise.
Corresponding to axis 7 relative to cylindrical shell 3 rotation in the clockwise direction and in the counterclockwise direction, forward damping force is symmetrical about reference position.
In the present embodiment based on the controlling method of the bidirectional rotary dampers of cylindrical magnet pair also can be: arranging damper is gear unit, the first cylindrical magnet 1 in gear unit and the second cylindrical magnet 2 are free state, the mode of operation arranging gear unit is: drive cylindrical shell 3 to rotate with the axis 7 rotated, or drives axis 7 to rotate with cylindrical shell 3.
Claims (7)
1. the bidirectional rotary dampers based on cylindrical magnet pair, it is characterized in that: the sintered NdFeB cylindrical magnet arranging a pair radial magnetizing is secondary, and what form described magnet pair is the first cylindrical magnet (1) and the second cylindrical magnet (2) respectively; Described first cylindrical magnet (1) is fixedly inlaid in axis (7), it is on the circumferential position of R that second cylindrical magnet (2) is fixedly installed on radius in cylindrical shell (3), described axis (7) is on the location mid-shaft of cylindrical shell (3), axis (7) is coaxial with cylindrical shell (3), and can relatively rotate; The magnetic line of force of described first cylindrical magnet (1) and the second cylindrical magnet (2) is along axis (7) in the radial direction.
2. the bidirectional rotary dampers based on cylindrical magnet pair according to claim 1, it is characterized in that: make the radius of the first cylindrical magnet (1) be R1, the radius of the second cylindrical magnet (2) is R2, setting: R is greater than R1+R2, makes to be formed with interval between described first cylindrical magnet (1) and the second cylindrical magnet (2).
3. the bidirectional rotary dampers based on cylindrical magnet pair according to claim 1, is characterized in that: arranging described axis (7) is take brass as material, and described cylindrical shell (3) take duralumin as material.
4. the bidirectional rotary dampers based on cylindrical magnet pair according to claim 1, it is characterized in that: axial hole is set on described cylindrical shell (3) for fixedly mounting the second cylindrical magnet (2), change the size of radius R and/or get the value of different radius Rs 2, the size of the damping force that damper exports can be adjusted.
5. the bidirectional rotary dampers based on cylindrical magnet pair according to claim 1, it is characterized in that: on cylindrical shell (3), radius is on the circumferential position of R, and be in and be fixedly installed three cylindrical magnet (8) with the position of the second cylindrical magnet (2) to 180 °, the heart, described three cylindrical magnet (8) is identical with the magnetic line of force direction of the second cylindrical magnet (2).
6. a controlling method for the bidirectional rotary dampers based on cylindrical magnet pair according to claim 1, is characterized in that: arranging described damping device has the following two kinds control mode:
Pattern one: cylindrical shell damping exports
Fixing axis (7), the central angle position at definition axis (7) place is reference position, at described reference position place, first cylindrical magnet (1) with the magnetic line of force place of the second cylindrical magnet (2) on the same line, and magnetic line of force direction is contrary, export as minimum damping force in the cylindrical shell damping of described reference position place;
Keep the magnetic line of force direction of the first cylindrical magnet (1) constant, cylindrical shell (3) is driven to rotate, described second cylindrical magnet (2) is with cylindrical shell (3) synchronous axial system, the central angle turned over along with cylindrical shell (3) is larger, and be not more than 90 °, the damping force that cylindrical shell damping exports is larger, and when the central angle that cylindrical shell (3) turns over is 90 °, cylindrical shell damping exports as maximum damping force;
Corresponding to cylindrical shell (3) relative to axis (7) rotation in the clockwise direction and in the counterclockwise direction, forward damping force is symmetrical about reference position.
Pattern two: axis damping exports
Fixed cylinder (3), the central angle position at definition cylindrical shell (3) place is reference position, at described reference position place, first cylindrical magnet (1) with the magnetic line of force place of the second cylindrical magnet (2) on the same line, and magnetic line of force direction is contrary, export as minimum damping force in the axis damping of described reference position place;
Keep the magnetic line of force direction of the second cylindrical magnet (2) constant, axis (7) is driven to rotate, described first cylindrical magnet (1) is with axis (7) synchronous axial system, the central angle turned over along with axis (7) is larger, and be not more than 90 °, the damping force that axis damping exports is larger, and when the central angle that axis (7) turns over is 90 °, axis damping exports as maximum damping force;
Corresponding to axis (7) relative to cylindrical shell (3) rotation in the clockwise direction and in the counterclockwise direction, forward damping force is symmetrical about reference position.
7. the controlling method of the bidirectional rotary dampers based on cylindrical magnet pair according to claim 1, it is characterized in that: arranging described damper is gear unit, the first cylindrical magnet (1) in described gear unit and the second cylindrical magnet (2) are free state, the mode of operation arranging gear unit is: drive cylindrical shell (3) to rotate with the axis rotated (7), or drives axis (7) to rotate with cylindrical shell (3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510369108.2A CN104930099B (en) | 2015-06-26 | 2015-06-26 | Based on the secondary bidirectional rotary dampers of cylindrical magnet and its control method |
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| CN201510369108.2A CN104930099B (en) | 2015-06-26 | 2015-06-26 | Based on the secondary bidirectional rotary dampers of cylindrical magnet and its control method |
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| CN104930099B CN104930099B (en) | 2017-03-08 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1084620A (en) * | 1992-09-25 | 1994-03-30 | 中国人民解放军二炮第一研究所 | Magnetic spring with negative coefficient of elasticity |
| JPH11153186A (en) * | 1997-11-18 | 1999-06-08 | Fuji Seiki Co Ltd | Rotational operation support mechanism and rotary damper |
| CN201065906Y (en) * | 2007-06-19 | 2008-05-28 | 刘新广 | Magnetic shock-absorber |
| CN202418403U (en) * | 2012-02-08 | 2012-09-05 | 谢宁 | Magneto-rheologic elastic body rotary type magneto-rheologic damper |
| US20130341137A1 (en) * | 2012-06-20 | 2013-12-26 | GM Global Technology Operations LLC | High energy density magnetic springs using spatially modulated magnetic fields technology |
| CN204739140U (en) * | 2015-06-26 | 2015-11-04 | 中国科学院合肥物质科学研究院 | Two -way rotational damping ware based on cylinder magnet is vice |
-
2015
- 2015-06-26 CN CN201510369108.2A patent/CN104930099B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1084620A (en) * | 1992-09-25 | 1994-03-30 | 中国人民解放军二炮第一研究所 | Magnetic spring with negative coefficient of elasticity |
| JPH11153186A (en) * | 1997-11-18 | 1999-06-08 | Fuji Seiki Co Ltd | Rotational operation support mechanism and rotary damper |
| CN201065906Y (en) * | 2007-06-19 | 2008-05-28 | 刘新广 | Magnetic shock-absorber |
| CN202418403U (en) * | 2012-02-08 | 2012-09-05 | 谢宁 | Magneto-rheologic elastic body rotary type magneto-rheologic damper |
| US20130341137A1 (en) * | 2012-06-20 | 2013-12-26 | GM Global Technology Operations LLC | High energy density magnetic springs using spatially modulated magnetic fields technology |
| CN204739140U (en) * | 2015-06-26 | 2015-11-04 | 中国科学院合肥物质科学研究院 | Two -way rotational damping ware based on cylinder magnet is vice |
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| CN104930099B (en) | 2017-03-08 |
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